Water-heater.



W. L. BLAGKWELL.

WATER HEATER.

APPLICATION FILED JUNE 15, 1910.

Patented Sept 27, 1910.

2 SHEETSSHEET 1.

W. L. BLACKWELL.

WATER HEATER.

APPLICATION FILED JUNE 15, 1910. g? 1 9 11 67 Patented Sept. 27, 1910.

2 SHEETS-SHEET 2.

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WILLIAM L. BLACKWELL, 0F DAYTON, OHIO.

WATER-HEATER.

To all whom. it may concern! Be it known that L'WILLIAM BLACK- wELL, a citizen of the United States, residing at Daytomin the county of Montgomery and State of ()hio, have invented certain new and useful Tmprovements in Water- Heaters; and T do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art-to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specificationv This invention relates to new and useful improvements in water-heaters and is especially adapted to be used on street cars.

The object of the invention is to provide a water-heater of light weight, which provides ample circulation and a large heating surface.

A further object of the invention is to provide a water-heater that is so constructed that it may be assembled by welding all the joints, thereby making the same of sheet steel and virtually of one integral piece when the several pans or sections are united.

Referring to the drawings, Figure 1 is a perspective view of the heater with portions cut away. Fig. 2 is a section on the line a w of Fig. 1. Fig. 3 is a section on the line b b of Fig. 1. Fig.4 is a section on the line 0 c of Fig. 1. Fig. 5 is a section on the line (i d of Fig. 1. And Figs. 6 and 7 are details showing the method of Welding the various parts together.

Throughout the specification and drawings, similar reference characters indicate corresponding parts.

The back sldes and front of the heater are made of sheet metal, and when united, form water legs on all sides. The back s ides are formed of outer shallow pans and inner pans somewhat deeper. Both of said inner and outer pans are provided with flanges which when all the parts are assembled, are welded together to form one unitary construction with advantages peculiar to such construction.

The back of the heater consists of .an outer shallow pan 2 and an inner deeper pan 3, the flanges 1 of which are welded as abovedescribed. N ear the top of the back, and communicating .with the back water leg is an outlet pipe 4 which is Welded to an apertured flange 5 on the outer pan 2, and at the Specification of Letters Patent.

Application filed June 15, 1910.

Patented dept. 2?, Jllild.

Serial No. 566,938.

bottom of said back and welded to an apertured flange 6 on the outer pan 2, is the inlet pipe 7. The water is introduced to and from the back water leg through these pipes 4c and 7. Mounted above said inlet pipe 7 is a horizontaldivision plate 8 which divides the back water leg into upper and lower portions, see Fig. 2. Immediately in front of the inlet pipe 7 is a vertical division plate 9 in the back water leg, which separates the incoming water and causes it to flow to the right and left. .The water leaves the lower portion of the back water leg and enters lower portions of the side water legs through passage-ways formed of outer and inner flanged openings 10. The inner flanges 10 are on the deep pan 3 of the back, and project into the outer flanges 10 which are drawn inwardly from the deeper pans 12 of the side water legs. The flanges 10 thus fitting, are Welded as above described, see Figs.

4 and 5.

The side water legs are formed of outer shallow pans 11. and the inner deep pans 12, both of which are provided with flanges 13 welded as above described. On the interior of the side water legs, near the bottom thereof, and above the flanged openings 10, are division plates 14 which direct the water through the lower portion of the side Water legs to the front water leg. The water passes from the lower division of the side water legs to the front water leg through passage-ways formed by flanged openings 15 constructed and Welded in a inanncridentical withthe flanges 10. The front water leg consists of an outer shallow an 16 and an inner deep pan 17, bothof which are provided with abutting flanges 18, welded as described The frontwater leg is not divided into upper and "lower portions as are the side and backwater legs; but acts as a return chamber for the water to reenter the side water legs through passage-Ways formed of flanged openings 19, similar to the flanges 10 and 15. The passage-ways formed by the flanged openings 19 lie above the division plates 14. The front water leg and the bottom portions of the side and rear .water legs form the the box, below which may be mounted a grate 20. The front water leg does not extend above the fire box as do the other water legs. This allows access to the fire box from the front of the heater.

The water after entering the upper portion of the side water legs may enter the upper portion of the rear water leg through passage-Ways formed by flanged openings 21 similar to the flanged openings 10 and 15. The side Water legs are connected by a multiplicity of circulating water tubes 22 which are preferably arran ed in staggered posltions and lie-above t e fire box. The ends of the said tubes 22 lie in flanges 23 and are welded as are the flanges 10 and 15, see Figs. 6 and 7. Some of the water in the upper portions of the side water legs may enter the tubes 22 and become additionally heated before passing into the upper portion of the rear Water leg and out through the outlet ipe 4. The tubes 22 are separated into ront and rear tubes, and the intervening space is occupied by a hopper 24 depending from a plate 25 which rests upon the upper tubes 22. The plate 25 is rovided with a smoke outlet 26 which lea s to a flue (not shown) in the casing 27. The bottom of the casing 27 may inclose an ash pan 28, and is provided with angle bars 29 which support the grate. The angle bars 29 are provided with vertical members 30 which support the entire heater. The casing 27 is provided with a suitable front having doors which give access to the ash pan, grate, fire box and hopper, but which is not shown as it forms no part of the present invention.

It will thus be seen that by providing the various parts with flanges 1, 5, 6, 10, 13, 15, 18, 19, 21 and 23 at their adjoining portions, the entire heater may be made of sheet metal and may be welded. When thus constructed it forms a heater of small weight and requires a minimum of space, which is a very important item in a street car heater.

- 1 claim:

A hot water heater the walls of which consist of inner and outer steel plates, the edges of which extend at right angles and are united to provide between them, back and side water legs extending approximately the entire length of the heater, and a. front water leg extending a portion of the length of the heater, the inner plates of said water legs being provided. with telescopic flanged openings united and providing for water circulation between said legs attheir 11 peer and lower portions, the inner plates 0 the two side water legs having alined flanged openings in the -upper portions thereof for a series of circulating tubes secured within said 0 nings and through which a circulation 0 water is maintained, the rear water 1e having an outlet pipe at the top and an in et pipe at the bottom, a division plate in the back water leg which divides the water incoming through said inlet pipe to opposite sides, and division plates in the side water legs through which is directed the water through the lower portions of said side water legs to the front water leg, substantially as shown and described.

In testimon whereof I atfix my signature, in presence 0 two witnesses.

WILLIAM L. BLACKWELL.

Witnesses:

WILLIAM B. SULLIVAN, HOWARD S. SMITH. 

